Play a mage with piercing rod? Short of worshipping Mystera Annur and wiping resistance, there seems to be no viable way to play a non-warlord melee class in dungeons that feature two bosses, each resistant to a different flavor of damage. Melee lacks a tool like the piercing wand, and i find unless you have immense durability (warlord) it's nigh impossible to kill some of the bosses in this game. There's the really big sword, but not only is the passive crippling (especially to the low durability, high damage classes that need it the most [rogue, assassin]), but it doesn't even grant full damage penetration.

My suggestion is elf paladin with dragon shield and whupaz+schaudenfraud. Go for physical boss first. When he dies it reduces the other to one hp so a fireball should easily take him out. The 3rd boss is very easy as long as you save some resources.

I've beaten Doubledoom with every class except wizard and priest (which is more apathy on my part towards those classes than any inability to complete this dungeon). I couldn't disagree with your sentiments more.

Gone through Doubledoom with every class as well. Admittedly there were some cases where it's just impossible to complete it (Fighter vs Bleaty without CYDSTEPP or other useful equipment), but overall it's not too bad.

Admittedly there were some cases where it's just impossible to complete it (Fighter vs Bleaty without CYDSTEPP or other useful equipment), but overall it's not too bad.

If you're doing purist and get a bad run of glyphs and you don't get a good alter or shop, maybe that's impossible, but if you have any half-decent assets he really just raises the difficulty of the level up to "hard", which is still quite reasonable for a veteran.

I actually just played Doubledoom with fighter and got Bleaty and Jormungandor as my bosses. I chose preparations to stack resistances (Dragon Shield + Patches), which eventually gave me enough staying power to survive a blow from Bleaty. Along with HALPMEH and a mid-battle level-up from killing other monsters, that let me beat Bleaty without even using potions or death protection. An Orc with PISORF can also slaughter Bleaty, and any non-berserker who gets his hands on a full-piercing wand can fry that goat.

Certainly Bleaty will trip up a beginner, but veterans should only lose to him if they get some additional bad luck.